Comment # 2 on bug 1143725 from Dario Faggioli

And I've just checked that building (statically) qemu-aarch64, from the
upstream git tree, works as well.

$ cat /proc/sys/fs/binfmt_misc/qemu-aarch64 
enabled
interpreter /usr/bin/qemu-aarch64-upstream
flags: OCF
offset 0
magic 7f454c460201010000000000000000000200b700
mask ffffffffffffff00fffffffffffffffffeffffff

$ /usr/bin/qemu-aarch64-upstream --version
qemu-aarch64 version 4.0.93 (v4.1.0-rc3-dirty)
Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers

$ docker run -it --rm qemu-leap /bin/bash
:/ # uname -a
Linux cf5f2385946e 5.1.16-1-default #1 SMP Wed Jul 3 12:37:47 UTC 2019
(2af8a22) aarch64 aarch64 aarch64 GNU/Linux

:/ # /usr/bin/qemu-aarch64-upstream --version
qemu-aarch64 version 4.0.93 (v4.1.0-rc3-dirty)
Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers

I think this is a step toward ruling out QEMU version issues. Now our
patch-queue and our config options remain to be checked.